"1. Title: Hepatitis Domain 2. Sources: (a) unknown (b) Donor: G.Gong (Carnegie-Mellon University) via Bojan Cestnik Jozef Stefan Institute Jamova 39 61000 Ljubljana Yugoslavia (tel.: (38)(+61) 214-399 ext.287) } (c) Date: November, 1988 3. Past Usage: 1. Diaconis,P. & Efron,B. (1983). Computer-Intensive Methods in Statistics. Scientific American, Volume 248. -- Gail Gong reported a 80% classfication accuracy 2. Cestnik,G., Konenenko,I, & Bratko,I. (1987). Assistant-86: A Knowledge-Elicitation Tool for Sophisticated Users. In I.Bratko & N.Lavrac (Eds.) Progress in Machine Learning, 31-45, Sigma Press. -- Assistant-86: 83% accuracy 4. Relevant Information: Please ask Gail Gong for further information on this database. 5. Number of Instances: 155 6. Number of Attributes: 20 (including the class attribute) 7. Attribute information: 1. Class: DIE, LIVE 2. AGE: 10, 20, 30, 40, 50, 60, 70, 80 3. SEX: male, female 4. STEROID: no, yes 5. ANTIVIRALS: no, yes 6. FATIGUE: no, yes 7. MALAISE: no, yes 8. ANOREXIA: no, yes 9. LIVER BIG: no, yes 10. LIVER FIRM: no, yes 11. SPLEEN PALPABLE: no, yes 12. SPIDERS: no, yes 13. ASCITES: no, yes 14. VARICES: no, yes 15. BILIRUBIN: 0.39, 0.80, 1.20, 2.00, 3.00, 4.00 -- see the note below 16. ALK PHOSPHATE: 33, 80, 120, 160, 200, 250 17. SGOT: 13, 100, 200, 300, 400, 500, 18. ALBUMIN: 2.1, 3.0, 3.8, 4.5, 5.0, 6.0 19. PROTIME: 10, 20, 30, 40, 50, 60, 70, 80, 90 20. HISTOLOGY: no, yes The BILIRUBIN attribute appears to be continuously-valued. I checked this with the donater, Bojan Cestnik, who replied: About the hepatitis database and BILIRUBIN problem I would like to say the following: BILIRUBIN is continuous attribute (= the number of it's \"values\" in the ASDOHEPA.DAT file is negative!!!); \"values\" are quoted because when speaking about the continuous attribute there is no such thing as all possible values. However, they represent so called \"boundary\" values; according to these \"boundary\" values the attribute can be discretized. At the same time, because of the continious attribute, one can perform some other test since the continuous information is preserved. I hope that these lines have at least roughly answered your question. 8. Missing Attribute Values: (indicated by \"?\") Attribute Number: Number of Missing Values: 1: 0 2: 0 3: 0 4: 1 5: 0 6: 1 7: 1 8: 1 9: 10 10: 11 11: 5 12: 5 13: 5 14: 5 15: 6 16: 29 17: 4 18: 16 19: 67 20: 0 9. Class Distribution: DIE: 32 LIVE: 123 Relabeled values in attribute SEX From: 2 To: male From: 1 To: female Relabeled values in attribute STEROID From: 1 To: no From: 2 To: yes Relabeled values in attribute ANTIVIRALS From: 2 To: no From: 1 To: yes Relabeled values in attribute FATIGUE From: 2 To: no From: 1 To: yes Relabeled values in attribute MALAISE From: 2 To: no From: 1 To: yes Relabeled values in attribute ANOREXIA From: 2 To: no From: 1 To: yes Relabeled values in attribute LIVER_BIG From: 1 To: no From: 2 To: yes Relabeled values in attribute LIVER_FIRM From: 2 To: no From: 1 To: yes Relabeled values in attribute SPLEEN_PALPABLE From: 2 To: no From: 1 To: yes Relabeled values in attribute SPIDERS From: 2 To: no From: 1 To: yes Relabeled values in attribute ASCITES From: 2 To: no From: 1 To: yes Relabeled values in attribute VARICES From: 2 To: no From: 1 To: yes Relabeled values in attribute HISTOLOGY From: 1 To: no From: 2 To: yes " "0" "hepatitis" "no" "no" "no" "no" "no" 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